Juniper MX2020 Hardware Manual page 556

CAUTION:
An arc smaller than a few inches in diameter can damage the cable and cause
problems that are difficult to diagnose.
6. Immediately cover each optical transceiver and the end of each fiber-optic cable with a rubber safety
cap.
7. Arrange the disconnected cables in the upper and lower cable managers to prevent the cables from
developing stress points.
8. Simultaneously turn both of the ejector handles outward to unseat the MPC along with the ADC.
9. Grasp the handles, and slide the combined cards straight out of the card cage halfway.
10. Place one hand around the front of the combined cards and the other hand under it to support it. Slide
the combined cards completely out of the chassis.
CAUTION:
end. Be prepared to accept the full weight—up to 25 lb (11.34 kg)—as you slide
the cards out of the chassis.
When the combined cards are out of the chassis, do not hold it by the ejector
handles, bus bars, or edge connectors. They cannot support its weight.
Do not stack the combined cards on top of one another after removal.
11. Place each one individually in an electrostatic bag or on its own antistatic mat on a flat, stable surface.
12. If you are not reinstalling both MPC and ADC into the emptied slot within a short time, install a blank
ADC panel over the slot to maintain proper airflow in the card cage.
CAUTION:
before reinserting it, removing an MPC and ADC from a different slot, or inserting
an MPC and ADC into a different slot.
Avoid bending fiber-optic cable beyond its minimum bend radius.
The weight of the MPC with the ADC is concentrated in the back
After removing both cards from the chassis, wait at least 30 seconds
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